2. Stay cool
Problems from the heat are more likely when both temperature and humidity are high.
• Drink fluids. Water and sports drinks are best. The caffeine in tea and coffee increases dehydration.
• Avoid vigorous activity during the hottest parts of the day.
• Watch for signs of heat exhaustion. Warning signs include heavy sweating, headaches, nausea, muscle cramps, rapid heartbeat, and fainting. If symptoms don't ease within 30 minutes, get medical attention.